1002021201002 has 16 divisors (see below), whose sum is σ = 1590470888832. Its totient is φ = 472477845840.

The previous prime is 1002021200989. The next prime is 1002021201007. The reversal of 1002021201002 is 2001021202001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1002021201007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153398633 + ... + 153405164.

It is an arithmetic number, because the mean of its divisors is an integer number (99404430552).

Almost surely, 2^{1002021201002} is an apocalyptic number.

1002021201002 is a deficient number, since it is larger than the sum of its proper divisors (588449687830).

1002021201002 is a wasteful number, since it uses less digits than its factorization.

1002021201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306803893.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002021201002 its reverse (2001021202001), we get a palindrome (3003042403003).

Subtracting 1002021201002 from its reverse (2001021202001), we obtain a palindrome (999000000999).

The spelling of 1002021201002 in words is "one trillion, two billion, twenty-one million, two hundred one thousand, two".